Malicious PDF — malware analysis report

Static analysis result for SHA-256 056241ab2be53423…

MALICIOUS

PDF

77.6 KB Created: 2021-03-04 10:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 518e971622a38fcd49eeca383b3305c5 SHA-1: 118681ce6020d7fdf2b228f65cff3a6eb35365ca SHA-256: 056241ab2be53423e1eb270a9c601e0ebc09cd033d2d9e93fcfd2c04af104005
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to contain text related to an 'Emerson nature rhetorical analysis', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fokemale.ru/strik?utm_term=emerson+nature+rhetorical+analysis PDF link annotation
    • http://pafekusiwajida.66ghz.com/68289832803.pdfIn PDF document text
    • https://cdn.sqhk.co/xotolodi/ahhFgdi/ice_cream_master_free_food_making_cooking_games.pdfIn PDF document text
    • http://topitoxituzoju.iblogger.org/reportaje_carcel_la_modelo_colombia.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/bhgqgc5/juegos_de_nickelodeon_soccer_stars_1.pdfIn PDF document text
    • http://wiloweredivon.iblogger.org/wixim.pdfIn PDF document text
    • https://cdn.sqhk.co/pasovevutuvi/Ajf98Az/muvowojijekiro.pdfIn PDF document text
    • http://tepuragebu.iblogger.org/xaxoxilurapovazabapejize.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/hTGhdjg/happy_fall_image_with_dogs.pdfIn PDF document text
    • http://xogezile.66ghz.com/54649980707.pdfIn PDF document text
    • https://cdn.sqhk.co/bibikodazit/mhegiiD/social_dev_story_2._1._8_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/thai_cha_cha_line_dance_step_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/wobefofozifivajolasu.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/zexofutuzunika.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/92893109415.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/adaptec_raid_8805_manual.pdfIn PDF document text
    • http://xeneguso.epizy.com/how_to_write_an_eval_navy.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/singer_simple_3223by_sewing_machine-berry.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE755 4980 bytes
SHA-256: da652db592b60500eba5d200014528fae5c9a9ea44ccfa389cabb6f74c6ee0c5
font_01_sfnt_off0000f813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF813 10152 bytes
SHA-256: 5b4778d0d8f0d46cd9a9318a9c7325fb178a360e08818d17eed7dd0bb0352fd9
font_02_sfnt_off00011abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ABB 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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